gui/dialogs/wml_message.cpp

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/* $Id: wml_message.cpp 53727 2012-03-31 18:31:38Z mordante $ */
/*
   Copyright (C) 2008 - 2012 by Mark de Wever <koraq@xs4all.nl>
   Part of the Battle for Wesnoth Project http://www.wesnoth.org/

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY.

   See the COPYING file for more details.
*/

#define GETTEXT_DOMAIN "wesnoth-lib"

#include "gui/dialogs/wml_message.hpp"

#include "foreach.hpp"
#include "gui/auxiliary/old_markup.hpp"
#include "gui/widgets/button.hpp"
#include "gui/widgets/label.hpp"
#ifdef GUI2_EXPERIMENTAL_LISTBOX
#include "gui/widgets/list.hpp"
#else
#include "gui/widgets/listbox.hpp"
#endif
#include "gui/widgets/settings.hpp"
#include "gui/widgets/text_box.hpp"
#include "gui/widgets/window.hpp"

namespace gui2 {

void twml_message_::set_input(const std::string& caption,
        std::string* text, const unsigned maximum_length)
{
    assert(text);

    has_input_ = true;
    input_caption_ = caption;
    input_text_ = text;
    input_maximum_length_ = maximum_length;
}

void twml_message_::set_option_list(
        const std::vector<std::string>& option_list, int* chosen_option)
{
    assert(!option_list.empty());
    assert(chosen_option);

    option_list_ = option_list;
    chosen_option_ = chosen_option;
}

/**
 * @todo This function enables the wml markup for all items, but the interface
 * is a bit hacky. Especially the fiddling in the internals of the listbox is
 * ugly. There needs to be a clean interface to set whether a widget has a
 * markup and what kind of markup. These fixes will be post 1.6.
 */
void twml_message_::pre_show(CVideo& /*video*/, twindow& window)
{
    window.canvas(1).set_variable("portrait_image", variant(portrait_));
    window.canvas(1).set_variable("portrait_mirror", variant(mirror_));

    // Set the markup
    tlabel& title = find_widget<tlabel>(&window, "title", false);
    title.set_label(title_);
    title.set_use_markup(true);
    title.set_can_wrap(true);

    tcontrol& message = find_widget<tcontrol>(&window, "message", false);
    message.set_label(message_);
    message.set_use_markup(true);
    // The message label might not always be a scroll_label but the capturing
    // shouldn't hurt.
    window.keyboard_capture(&message);

    // Find the input box related fields.
    tlabel& caption = find_widget<tlabel>(&window, "input_caption", false);
    ttext_box& input = find_widget<ttext_box>(&window, "input", true);

    if(has_input_) {
        caption.set_label(input_caption_);
        caption.set_use_markup(true);
        input.set_value(*input_text_);
        input.set_maximum_length(input_maximum_length_);
        window.keyboard_capture(&input);
        window.set_click_dismiss(false);
        window.set_escape_disabled(true);
    } else {
        caption.set_visible(twidget::INVISIBLE);
        input.set_visible(twidget::INVISIBLE);
    }

    // Find the option list related fields.
    tlistbox& options = find_widget<tlistbox>(&window, "input_list", true);

    if(!option_list_.empty()) {
        std::map<std::string, string_map> data;
        for(size_t i = 0; i < option_list_.size(); ++i) {
            /**
             * @todo This syntax looks like a bad hack, it would be nice to write
             * a new syntax which doesn't use those hacks (also avoids the problem
             * with special meanings for certain characters.
             */
            tlegacy_menu_item item(option_list_[i]);

            if(item.is_default()) {
                // Number of items hasn't been increased yet so i is ok.
                *chosen_option_ = i;
            }

            // Add the data.
            data["icon"]["label"] = item.icon();
            data["label"]["label"] = item.label();
            data["label"]["use_markup"] = "true";
            data["description"]["label"] = item.description();
            data["description"]["use_markup"] = "true";
            options.add_row(data);
        }

        // Avoid negetive and 0 since item 0 is already selected.
        if(*chosen_option_ > 0
                && static_cast<size_t>(*chosen_option_)
                < option_list_.size()) {

            options.select_row(*chosen_option_);
        }

        if(!has_input_) {
            window.keyboard_capture(&options);
            window.set_click_dismiss(false);
            window.set_escape_disabled(true);
        } else {
            window.add_to_keyboard_chain(&options);
            // click_dismiss has been disabled due to the input.
        }
    } else {
        options.set_visible(twidget::INVISIBLE);
    }
    window.set_click_dismiss(!has_input_ && option_list_.empty());
}

void twml_message_::post_show(twindow& window)
{
    if(has_input_) {
        *input_text_ =
                find_widget<ttext_box>(&window, "input", true).get_value();
    }

    if(!option_list_.empty()) {
        *chosen_option_ = find_widget<tlistbox>(
                &window, "input_list", true).get_selected_row();
    }
}

REGISTER_DIALOG(wml_message_left)

REGISTER_DIALOG(wml_message_right)

int show_wml_message(const bool left_side
        , CVideo& video
        , const std::string& title
        , const std::string& message
        , const std::string& portrait
        , const bool mirror
        , const bool has_input
        , const std::string& input_caption
        , std::string* input_text
        , const unsigned maximum_length
        , const std::vector<std::string>& option_list
        , int* chosen_option)
{
    std::auto_ptr<twml_message_> dlg;
    if(left_side) {
        dlg.reset(new twml_message_left(title, message, portrait, mirror));
    } else {
        dlg.reset(new twml_message_right(title, message, portrait, mirror));
    }
    assert(dlg.get());

    if(has_input) {
        dlg->set_input(input_caption, input_text, maximum_length);
    }

    if(!option_list.empty()) {
        dlg->set_option_list(option_list, chosen_option);
    }

    dlg->show(video);
    return dlg->get_retval();
}

} // namespace gui2